If you need to convert a lot of Twitter-ID’s to Twitter-handles frequently, you might consider downloading “Anaconda” (or another Python-environment) for your own operating system.
Below you will find a script, that are able to take a comma separated line of ID’s and convert them to handles. The script will output to command line and create a csv-file in the same directory as the file is run from.
Prior to running the script, you will need to create a Twitter-app to grant the script acces to Twitters’ API. You will also need to install Tweepy and its’ dependencies either through a terminal or the Anaconda interface. The script can be run in Jupyter Notebook. Please note, there is no error handling in the script, but Jupyter Notebook does provide friendly error messages for debugging input.
# TAKE IDs AND CONVERT TO HANDLES COMMA SEPARATED import tweepy import csv import time # GLOBAL VARS consumer_key = 'CREATE_AND_INSERT' consumer_secret = 'CREATE_AND_INSERT' access_token = 'CREATE_AND_INSERT' access_token_secret = 'CREATE_AND_INSERT' auth = tweepy.OAuthHandler(consumer_key, consumer_secret) auth.set_access_token(access_token, access_token_secret) # SET OBJECT AND AUTHENTICATE api = tweepy.API(auth) # Prompt for usernames print('Format input like this userid1,userid2,userid3') print('Eg. Provide a comma separated list that looks like: 92454545,555787894,65656478') myIds = input("Feed a comma separated list of user id numbers ") #Check for valid input if myIds: # Clear the input, prepare for lookup myIds = myIds.replace(' ','') myIds = myIds.split(',') # Set a new list object myHandleList =  i = 0 # Loop trough the list of usernames for idnumber in myIds: u = api.get_user(myIds[i]) uid = u.screen_name myHandleList.append(uid) i = i+1 # Print the lists print('Twitter-Ids',myIds) print('Usernames',myHandleList) #set a filename based on current time csvfilename = "csvoutput-"+time.strftime("%Y%m%d%-H%M%S")+".csv" print('We also outputted a CSV-file named '+csvfilename+' to your file parent directory') with open(csvfilename, 'w') as myfile: wr = csv.writer(myfile, delimiter=',', quotechar='|', quoting=csv.QUOTE_MINIMAL) wr.writerow(['username','twitter-id']) j = 0 for handle in myHandleList: writeline = myHandleList[j],myIds[j] wr.writerow(writeline) j = j+1 else: print('The input was empty')